Oscillating blower



June 13, 1950 Filed May 14, 1945 H. A. GEI-IRES 2,511,576

OSCILLATING BLOWER 2 Sheets-Sheet 1 Mmmm ff. WR'

June 13, 1950 H. A. GEHRES 2,511,576

oscILLATING BLOWER Filed May 14, 1945 2 Sheets-Sheet 2 V l SucnoN DlScHAIN V EN TOR.

Patented June 13, 1950 UNITED STATES PATENT OFFICE 2,511,576SCI'LLATINGLBLOWER Hewitt A. Gelires, Mount Vernon, Ohio, assignor toCooper-Bessemer Gorporation,fMo1mt 'Ver'- Y non, hio, acm-poration ofOhio Application May 14, 1945, Serial No. 593,620

(Cl."230--l'59) 2 iaims. l

The invention relates to# oscillating blowers such as may .be .used forscavenging purposes in connection with internal fcombustion engines, oneobject being :to provide a blower of the above type consisting .oi unitsof such construction that they may be readily assembled side by .side to.provide ablower oi required capacity, each 0i such blower units beingso coordinated in respect to its driving mechanism and connections tothe suction and discharge passageways that a number of the units may beassembled as above described to make up a multiple unit blower withoutentailing awkward assembly problems or modicationsof the several units.

l'n accordance with the present invention .the operating parte or eachof the oscillating blower units are located substantially within theconiines of its own plane, so that the several units may be readilydriven by appropriate individual crank i mechanisms connected to a crankshaft running parallel to the blower assembly, and` the various units,may be operated in such phase relation as to substantially balance outthe strains of the power impuises. lThe invention also includes certainstructural relationships of the various parts to enable necessaryinterior machining operations to be performed, and promote readyassembly. Further objects and advantages of the invention will be inpart obvious and in part speciiically referred to in the descriptionherein- :V

after contained which, taken in conjunction with the accompanyingdrawings, discloses certain preferred forms of oscillating blowersconstructed to operate in accordance with the invention; the disclosurehowever should be considered as merely illustrative of the principles ofthe invention in its broader aspects.

n the drawings:

Fig. l is a vertical cross-sectional View of an oscillating blowerconstructed to operate in accordance with the invention, the sectionbeing taken on line I-I of Fig. 2.

Fig. 2 is a central longitudinal section of the blower shown in Fig. 1.

Fig. 3 is a fragmentary view similar to Fig. 2 but showing a housingconstruction modied to accommodate a larger number of blower units.

The invention is illustrated as applied to blower units having annularsupporting members I which are mounted for angular oscillating movementabout a central stationary shaft 2. The supporting members i each have aplurality of vanos or blades 3 located in spaced relation about theirperipheries, and projecting radially outward. A plurality of stationarypartition members 4 divide the spaces through whichthe vanes 3 sweepinto a plurality of arcuate pumping chambers 5 which are double actingin that as the vanes 3 oscillate angularly, the chambers 5 on oppositesides of the vanes 3 act alternately as intake and delivery chambers.

Adjacent the partition members 4, ports 6 are provided for each of theblower units, and each of such ports affords communication both with aAsuction passageway 'I and a discharge passageway "6. AppropriateVsuction valves 9 (Fig. 2) .control communication between the suctionpassageways l and the chambers 5, and appropriate discharge valves Il).control communication between the chambers 5 and the dischargepassageway 8. These valves will not be describedin detail sinceappropriate forms thereof are known to the art. It should be noted as tothe right Vhand blower unit of Fig. 2 for example, that the vane 3 whichappears in Fig. 2 sweeps past both the right hand .suction passageway land the central discharge passageway 8; thus as the vanes 3 of Fig. lmove angularly to the right from the position shown in Fig. 1, thechambers 5 to the yleftof the vanes will act as intake chambers toArunningparallelto the shaft 2 is connected to cranks -I2rwhich are inturn pivoted tocrank pins I3 passing through lugs I@ on the vanesupporting members I, these lugs appearing in the lower right handsector of Fig. l, As shown in Fig. 2, this type of construction permitseach oscillating blower unit to be powered within the confines of itsown plane, so to speak, so that by using shafts 2 and I I of appropriatelength, any desired number of blower units may be readily assembled sideby side. Each oscillating unit of such an assembly can self-aline itselflongitudinally of the machine with respect to the adjacent stationaryparts with which it cooperates without aiecting the other units.Furthermore it is not necessary that the adjacent units be aligned withextreme accuracy since the adjacent members do not necessarily have tooperate exactly concentrically but may float, so to speak, so that eachone centers itself. Also by operating the various blower units inproperly staggered phase relation to each other, the power impulses canbe balanced out against each other and a smoother ow of air producedthan can be obtained with the large reciprocating double acting pumps inpresent day use for :similar purposes.

The structure as a whole may be carried within an outer housing or shelll Iwithin which are located the suction and discharge passageways l and8 which arcuately partially surround the vane supporting members l asshown. Preferably however the outer shell I5 encloses a separate annularframe member I6 which is machined to t therein and detachably connectedthereto by the rings il (Fig. 1). The ports 6 are provided in thisannular frame member I6, as are also the arcuate ns I8 which t withininwardly projecting ns I9 on the housing I5 to dene the suction anddischarge passageways. This construction enables access to be had,before assembly, for the machining operations necessary to form thevalve seats for the suction and discharge valve mechanisms. Circular endplates 20 (Fig. 2) in turn fit detachably within the annular framemembers I6 above described and are detachably secured in position byrings 2l.

The partition members 4 may be held in position by through bolts 22which pass through them and the end plates 20 above described, and alsothrough spacing partition members 23 which are interposed between theadjacent blower units.

Fig. 3 shows a form of the invention constructed to provide threejuxtaposed blower units of the character above described, the outerhousing a providing discharge passageways 8a. and 8b which alternatewith suction passageways 'Ia and lb, the suction valves 9a and thedischarge valves lila, being as above described in connection with Figs.1 and 2, and functioning in the same manner in cooperation with thevarious chambers 5a of Fig. 3. The annular housing 16a of Fig. 3 issimilar to that previously described in connection with Figs. 1 and 2,except that it is provided with a larger number of arcuate ns i 8a, anda larger number of the spacing partition members 23a are also employed.

While the invention has been disclosed as car ried out by the specificblower constructions above described, it should be understood thatchanges may be made therein without departing from the invention in itsbroader aspects, within the scope of the appended claims.

I claim:

l. An oscillating blower assembly of the class described, having aplurality of vane supporting members disposed side by side and mountedfor angular oscillating movement about a common axis, each of said vanesupporting members having a series of outwardly projecting vanes spacedabout its periphery, a housing encircling said vanes and having inwardlydirected partitions projecting between adjacent vanes of said vanesupporting members to denne pumping chambers between adjacent vanes andpartitions, driving members for oscillating said Vane supporting memberswhich driving members are alined respectively therewith in planestransverse to said axis of oscillation, said housing having suction anddischarge passageways serving the respective pumping chambers, whichpassageways are located radially outward of the aforesaid vanes, theradially outward edge portions of each of such vanes straddling asuction passageway and a discharge passageway, and suction and dischargevalves interposed respectively between said vanes and said passageways.

2. An oscillating blower assembly of the class described, having aplurality of vane supporting members disposed side by side and mountedfor angular oscillating movement about a common axis, each of said vanesupporting members having a series of outwardly projecting vanes spacedabout its periphery, a housing encircling said vanes and having inwardlydirected partitions projecting between adjacent vanes of said vanesupporting members to denne pumping chambers between adjacent vanes andpartitions, a crank shaft substantially parallel to the axis ofoscillation of said vane supporting members and having cranks angularlydisplaced with respect to each other and connected respectively indriving relation to said vane supporting members, said housing havingsuction and discharge passageways serving the respective pumpingchambers, which passageways are located radially outward of theaforesaid vanes, the radially outward edge portions of each of saidvanes straddling a suction passageway and a discharge passageway, andsuction and discharge valves interposed respectively between said vanesand said passageways.

HEWITT A. GEHRES.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 435,506 Longworth Sept. 2, 1890540,492 Humes June 4, 1895 1,243,299 Jackson Oct. 16, 1917 1,442,319Wilson Jan. 16, 1923 2,362,703 Kuttner Nov. 14, 1944 FOREIGN PATENTSNumber Country Date 511,954 Great Britain 1939

